Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.

The MessageServlet in the ActiveMQ web console API copies every JMS message
property into an HTTP response header without any validation. This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet.

This issue affects Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ Web: before 5.19.7, from 6.0.0 before 6.2.6.

Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue. The MessageServlet has now been deprecated and disabled by default.

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Fixes

Solution

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Workaround

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History

Mon, 01 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*

Mon, 01 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 01 Jun 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache activemq
Apache activemq Web
Vendors & Products Apache
Apache activemq
Apache activemq Web

Mon, 01 Jun 2026 09:30:00 +0000

Type Values Removed Values Added
References

Mon, 01 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web. The MessageServlet in the ActiveMQ web console API copies every JMS message property into an HTTP response header without any validation. This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet. This issue affects Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ Web: before 5.19.7, from 6.0.0 before 6.2.6. Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue. The MessageServlet has now been deprecated and disabled by default.
Title Apache ActiveMQ, Apache ActiveMQ Web: HTTP Response Header Injection via JMS Message Properties
Weaknesses CWE-79
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-06-01T13:12:40.804Z

Reserved: 2026-04-25T19:48:04.140Z

Link: CVE-2026-42253

cve-icon Vulnrichment

Updated: 2026-06-01T07:47:36.520Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-01T09:16:18.673

Modified: 2026-06-01T17:06:34.850

Link: CVE-2026-42253

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T15:30:31Z

Weaknesses